Substitution site effect of naphthyl substituted anthracene derivatives and their applications in organic optoelectronics

2020 ◽  
Vol 8 (44) ◽  
pp. 15597-15602
Author(s):  
Jie Li ◽  
Deyang Ji ◽  
Yongxu Hu ◽  
Mingxi Chen ◽  
Jinyu Liu ◽  
...  
Keyword(s):  
Site Effect ◽  
Molecular Packing ◽  
Optoelectronic Properties ◽  
Organic Optoelectronics ◽  
Substitution Site ◽  
Significant Difference ◽  
Anthracene Derivatives

Two different naphthyl substituted anthracene derivatives were synthesized. A tiny change of the substitution site of the naphthyl group leads to a significant difference of the molecular packing and exerts great impact on optoelectronic properties.

scholarly journals Small-Molecule Bulk Heterojunctions: Distinguishing Between Effects of Energy Offsets and Molecular Packing on Optoelectronic Properties

2013 ◽  
Vol 117 (47) ◽  
pp. 24752-24760 ◽  
Author(s):  
K. Paudel ◽  
B. Johnson ◽  
A. Neunzert ◽  
M. Thieme ◽  
B. Purushothaman ◽  
...  
Keyword(s):  
Small Molecule ◽  
Molecular Packing ◽  
Optoelectronic Properties ◽  
Bulk Heterojunctions

Radical-substituted dihydrophenazine radical cation salts: Molecular packing structure and bulk magnetic property

2010 ◽  
Vol 82 (4) ◽  
pp. 1025-1032 ◽  
Author(s):  
Yuki Masuda ◽  
Hirotaka Takeda ◽  
Masato Kuratsu ◽  
Shuichi Suzuki ◽  
Masatoshi Kozaki ◽  
...  
Keyword(s):  
Radical Cation ◽  
Building Blocks ◽  
Molecular Packing ◽  
Molecular Magnets ◽  
Molecular Structures ◽  
Nitronyl Nitroxide ◽  
Intermolecular Contact ◽  
Significant Difference ◽  
Radical Cation Salts ◽  
The Difference

Radical-substituted radical cation salts are exotic species that are potentially applicable as spin building blocks for molecular magnets. We recently found that these species, which are derived from a diphenyldihydrophenazine (DPP) framework, are stable under aerated conditions at room temperature. Of these species, nitronyl nitroxide (NN•)-substituted DPP•+ tetrachloroferrate (NNDPP••+·FeCl4–) showed antiferromagnetic interaction at low temperature (<150 K), whereas the tetrabromoferrate salt NNDPP••+·FeBr4– exhibited a magnetic phase transition at 6.7 K to produce a bulk ferrimagnet. Both salts had very similar molecular structures. The difference in the magnetic properties was ascribed to the difference in molecular packing structures. A significant difference in these two salts was observed at the (NNDPP••+)–(NNDPP••+) intermolecular contact, including the oxygen atom of the nitroxide moiety; NNDPP••+·FeCl4– had a serious antiferromagnetic O–O (nitroxide oxygen, 3.02 Å) intermolecular contact, whereas NNDPP••+·FeBr4– had a ferromagnetic O–HC (2.53 Å) intermolecular contact.

Alkyl Substituent Effects on Molecular Packing and Optoelectronic Properties of 2,3-Dialkyltetracenes

2014 ◽  
Vol 87 (8) ◽  
pp. 915-921 ◽  
Author(s):  
Chitoshi Kitamura ◽  
Genki Ohe ◽  
Takeshi Kawase ◽  
Akinori Saeki ◽  
Shu Seki
Keyword(s):  
Substituent Effects ◽  
Alkyl Substituent ◽  
Molecular Packing ◽  
Optoelectronic Properties

Control of the intermolecular photodimerization of anthracene derivatives by hydrogen bonding of urea groups in dilute solution

2016 ◽  
Vol 15 (8) ◽  
pp. 1071-1079 ◽  
Author(s):  
Hisato Matsumoto ◽  
Yoshinobu Nishimura ◽  
Tatsuo Arai
Keyword(s):  
Hydrogen Bonding ◽  
Dilute Solution ◽  
Substitution Site ◽  
Anthracene Derivatives ◽  
Urea Compounds

The control of the photodimerization reaction of anthracene–urea compounds was achieved by (1) aggregate conformation depending on the substitution site and (2) inhibition of aggregation by the addition of TBAAc.

Hearing Aid Gain Usage by Children

1989 ◽  
Vol 20 (2) ◽  
pp. 149-152 ◽  
Author(s):  
Kenneth W. Berger
Keyword(s):  
Hearing Aid ◽  
Appreciable Difference ◽  
Significant Difference ◽  
Clinically Significant

Hearing aid gain usage by two groups of children was examined. No appreciable difference was noted between the groups, nor was there a clinically significant difference between gain usage by these children as compared with a sample of adult hearing aid wearers.

A Comparison of Four Adolescent Language Tests

1987 ◽  
Vol 18 (3) ◽  
pp. 250-266 ◽  
Author(s):  
R. Jane Lieberman ◽  
Ann Marie C. Heffron ◽  
Stephanie J. West ◽  
Edward C. Hutchinson ◽  
Thomas W. Swem
Keyword(s):  
Test Performance ◽  
Sixth Grade ◽  
Significant Discrepancy ◽  
Language Impaired ◽  
Language Functions ◽  
Language Tests ◽  
Significant Difference ◽  
Sixth Grade Students ◽  
Overall Performance ◽  
Selection Of

Four recently developed adolescent language tests, the Fullerton Test for Adolescents (FLTA), the Test of Adolescent Language (TOAL), the Clinical Evaluation of Language Functions (CELF), and the Screening Test of Adolescent Language (STAL), were compared to determine: (a) whether they measured the same language skills (content) in the same way (procedures); and (b) whether students performed similarly on each of the tests. First, respective manuals were reviewed to compare selection of subtest content areas and subtest procedures. Then, each of the tests was administered according to standardized procedures to 30 unselected sixth-grade students. Despite apparent differences in test content and procedures, there was no significant difference in students' performance on three of the four tests, and correlations among test performance were moderate to high. A comparison of the pass/fail rates for overall performance on the tests, however, revealed a significant discrepancy between the proportions of students identified in need of further evaluation on the STAL (20%) and the proportion diagnosed as language impaired on the three diagnostic tests (60-73%). Clinical implications are discussed.

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